chore(ci, dto): update build workflow and enhance post DTOs

- Added NODE_NO_WARNINGS environment variable to build and deploy workflows.
- Upgraded actions/upload-artifact and actions/download-artifact to version 4 in the build workflow.
- Introduced ContentEditedAt field in PostResponse and PostDetailResponse DTOs to track content modification timestamps.
- Updated post conversion functions to include ContentEditedAt in responses.
- Ensured ContentEditedAt is set during post updates in the repository.

internal/dto/dto.go

@@ -149,6 +149,7 @@ type PostResponse struct {
 	IsVote         bool                `json:"is_vote"`
 	CreatedAt      string              `json:"created_at"`
 	UpdatedAt      string              `json:"updated_at"`
+	ContentEditedAt string             `json:"content_edited_at,omitempty"`
 	Author         *UserResponse       `json:"author"`
 	IsLiked        bool                `json:"is_liked"`
 	IsFavorited    bool                `json:"is_favorited"`
@@ -172,6 +173,7 @@ type PostDetailResponse struct {
 	IsVote         bool                `json:"is_vote"`
 	CreatedAt      string              `json:"created_at"`
 	UpdatedAt      string              `json:"updated_at"`
+	ContentEditedAt string             `json:"content_edited_at,omitempty"`
 	Author         *UserResponse       `json:"author"`
 	IsLiked        bool                `json:"is_liked"`
 	IsFavorited    bool                `json:"is_favorited"`
@@ -918,9 +920,10 @@ type AdminPostListResponse struct {
 	RejectReason   string              `json:"reject_reason,omitempty"`
 	ReviewedAt     string              `json:"reviewed_at,omitempty"`
 	ReviewedBy     string              `json:"reviewed_by,omitempty"`
-	CreatedAt      string              `json:"created_at"`
-	UpdatedAt      string              `json:"updated_at"`
-	Author         *UserResponse       `json:"author"`
+	CreatedAt       string              `json:"created_at"`
+	UpdatedAt       string              `json:"updated_at"`
+	ContentEditedAt string              `json:"content_edited_at,omitempty"`
+	Author          *UserResponse       `json:"author"`
 }
 
 // AdminPostDetailResponse 管理端帖子详情响应
@@ -944,10 +947,11 @@ type AdminPostDetailResponse struct {
 	IsVote         bool                `json:"is_vote"`
 	RejectReason   string              `json:"reject_reason,omitempty"`
 	ReviewedAt     string              `json:"reviewed_at,omitempty"`
-	ReviewedBy     string              `json:"reviewed_by,omitempty"`
-	CreatedAt      string              `json:"created_at"`
-	UpdatedAt      string              `json:"updated_at"`
-	Author         *UserResponse       `json:"author"`
+	ReviewedBy      string              `json:"reviewed_by,omitempty"`
+	CreatedAt       string              `json:"created_at"`
+	UpdatedAt       string              `json:"updated_at"`
+	ContentEditedAt string              `json:"content_edited_at,omitempty"`
+	Author          *UserResponse       `json:"author"`
 }
 
 // AdminModeratePostRequest 审核帖子请求

internal/dto/post_converter.go

@@ -48,25 +48,26 @@ func ConvertPostToResponse(post *model.Post, isLiked, isFavorited bool) *PostRes
 	}
 
 	return &PostResponse{
-		ID:             post.ID,
-		UserID:         post.UserID,
-		Title:          post.Title,
-		Content:        post.Content,
-		Images:         images,
-		Status:         string(post.Status),
-		LikesCount:     post.LikesCount,
-		CommentsCount:  post.CommentsCount,
-		FavoritesCount: post.FavoritesCount,
-		SharesCount:    post.SharesCount,
-		ViewsCount:     post.ViewsCount,
-		IsPinned:       post.IsPinned,
-		IsLocked:       post.IsLocked,
-		IsVote:         post.IsVote,
-		CreatedAt:      FormatTime(post.CreatedAt),
-		UpdatedAt:      FormatTime(post.UpdatedAt),
-		Author:         author,
-		IsLiked:        isLiked,
-		IsFavorited:    isFavorited,
+		ID:              post.ID,
+		UserID:          post.UserID,
+		Title:           post.Title,
+		Content:         post.Content,
+		Images:          images,
+		Status:          string(post.Status),
+		LikesCount:      post.LikesCount,
+		CommentsCount:   post.CommentsCount,
+		FavoritesCount:  post.FavoritesCount,
+		SharesCount:     post.SharesCount,
+		ViewsCount:      post.ViewsCount,
+		IsPinned:        post.IsPinned,
+		IsLocked:        post.IsLocked,
+		IsVote:          post.IsVote,
+		CreatedAt:       FormatTime(post.CreatedAt),
+		UpdatedAt:       FormatTime(post.UpdatedAt),
+		ContentEditedAt: FormatTimePointer(post.ContentEditedAt),
+		Author:          author,
+		IsLiked:         isLiked,
+		IsFavorited:     isFavorited,
 	}
 }
 
@@ -87,25 +88,26 @@ func ConvertPostToDetailResponse(post *model.Post, isLiked, isFavorited bool) *P
 	}
 
 	return &PostDetailResponse{
-		ID:             post.ID,
-		UserID:         post.UserID,
-		Title:          post.Title,
-		Content:        post.Content,
-		Images:         images,
-		Status:         string(post.Status),
-		LikesCount:     post.LikesCount,
-		CommentsCount:  post.CommentsCount,
-		FavoritesCount: post.FavoritesCount,
-		SharesCount:    post.SharesCount,
-		ViewsCount:     post.ViewsCount,
-		IsPinned:       post.IsPinned,
-		IsLocked:       post.IsLocked,
-		IsVote:         post.IsVote,
-		CreatedAt:      FormatTime(post.CreatedAt),
-		UpdatedAt:      FormatTime(post.UpdatedAt),
-		Author:         author,
-		IsLiked:        isLiked,
-		IsFavorited:    isFavorited,
+		ID:              post.ID,
+		UserID:          post.UserID,
+		Title:           post.Title,
+		Content:         post.Content,
+		Images:          images,
+		Status:          string(post.Status),
+		LikesCount:      post.LikesCount,
+		CommentsCount:   post.CommentsCount,
+		FavoritesCount:  post.FavoritesCount,
+		SharesCount:     post.SharesCount,
+		ViewsCount:      post.ViewsCount,
+		IsPinned:        post.IsPinned,
+		IsLocked:        post.IsLocked,
+		IsVote:          post.IsVote,
+		CreatedAt:       FormatTime(post.CreatedAt),
+		UpdatedAt:       FormatTime(post.UpdatedAt),
+		ContentEditedAt: FormatTimePointer(post.ContentEditedAt),
+		Author:          author,
+		IsLiked:         isLiked,
+		IsFavorited:     isFavorited,
 	}
 }
 

internal/handler/post_handler.go

@@ -112,9 +112,10 @@ func (h *PostHandler) GetByID(c *gin.Context) {
 		IsPinned:       post.IsPinned,
 		IsLocked:       post.IsLocked,
 		IsVote:         post.IsVote,
-		CreatedAt:      dto.FormatTime(post.CreatedAt),
-		UpdatedAt:      dto.FormatTime(post.UpdatedAt),
-		Author:         authorWithFollowStatus,
+		CreatedAt:       dto.FormatTime(post.CreatedAt),
+		UpdatedAt:       dto.FormatTime(post.UpdatedAt),
+		ContentEditedAt: dto.FormatTimePointer(post.ContentEditedAt),
+		Author:          authorWithFollowStatus,
 		IsLiked:        isLiked,
 		IsFavorited:    isFavorited,
 	}

internal/model/post.go

@@ -60,6 +60,8 @@ type Post struct {
 	// 时间戳
 	CreatedAt time.Time `json:"created_at" gorm:"autoCreateTime;index:idx_posts_status_created,priority:2,sort:desc;index:idx_posts_user_status_created,priority:3,sort:desc;index:idx_posts_hot_score_created,priority:2,sort:desc"`
 	UpdatedAt time.Time `json:"updated_at" gorm:"autoUpdateTime:false"`
+	// ContentEditedAt 仅在实际修改标题/正文/图片时更新，供前端展示「已编辑」；与统计类更新解耦
+	ContentEditedAt *time.Time `json:"content_edited_at,omitempty" gorm:"column:content_edited_at"`
 }
 
 // BeforeCreate 创建前生成UUID

internal/repository/comment_repo.go

@@ -73,6 +73,7 @@ func (r *CommentRepository) Delete(id string) error {
 				UpdateColumns(map[string]interface{}{
 					"comments_count": gorm.Expr("comments_count - 1"),
 					"hot_score":      gorm.Expr("likes_count * 2 + (comments_count - 1) * 3 + views_count * 0.1"),
+					"updated_at":     gorm.Expr("updated_at"),
 				}).Error; err != nil {
 				return err
 			}
@@ -102,6 +103,7 @@ func (r *CommentRepository) ApplyPublishedStats(comment *model.Comment) error {
 			UpdateColumns(map[string]any{
 				"comments_count": gorm.Expr("comments_count + 1"),
 				"hot_score":      gorm.Expr("likes_count * 2 + (comments_count + 1) * 3 + views_count * 0.1"),
+				"updated_at":     gorm.Expr("updated_at"),
 			}).Error; err != nil {
 			return err
 		}

internal/repository/post_repo.go

@@ -61,7 +61,8 @@ func (r *PostRepository) Create(post *model.Post, images []string) error {
 			}
 		}
 
-		return nil
+		// 新建帖子：保证 updated_at 与 created_at 一致（避免历史 NULL/库默认值导致前端误判为已编辑）
+		return tx.Model(post).Where("id = ?", post.ID).UpdateColumn("updated_at", post.CreatedAt).Error
 	})
 }
 
@@ -77,14 +78,18 @@ func (r *PostRepository) GetByID(id string) (*model.Post, error) {
 
 // Update 更新帖子
 func (r *PostRepository) Update(post *model.Post) error {
-	post.UpdatedAt = time.Now()
+	now := time.Now()
+	post.UpdatedAt = now
+	post.ContentEditedAt = &now
 	return r.db.Save(post).Error
 }
 
 // UpdateWithImages 更新帖子及其图片（images=nil 表示不更新图片）
 func (r *PostRepository) UpdateWithImages(post *model.Post, images *[]string) error {
 	return r.db.Transaction(func(tx *gorm.DB) error {
-		post.UpdatedAt = time.Now()
+		now := time.Now()
+		post.UpdatedAt = now
+		post.ContentEditedAt = &now
 		if err := tx.Save(post).Error; err != nil {
 			return err
 		}
@@ -120,6 +125,7 @@ func (r *PostRepository) UpdateModerationStatus(postID string, status model.Post
 		"reviewed_at":   gorm.Expr("CURRENT_TIMESTAMP"),
 		"reviewed_by":   reviewedBy,
 		"reject_reason": rejectReason,
+		"updated_at":    gorm.Expr("updated_at"), // 防止 MySQL ON UPDATE CURRENT_TIMESTAMP 误刷新
 	}
 	return r.db.Model(&model.Post{}).Where("id = ?", postID).UpdateColumns(updates).Error
 }
@@ -258,6 +264,7 @@ func (r *PostRepository) Like(postID, userID string) error {
 			UpdateColumns(map[string]any{
 				"likes_count": gorm.Expr("likes_count + 1"),
 				"hot_score":   gorm.Expr("(likes_count + 1) * 2 + comments_count * 3 + views_count * 0.1"),
+				"updated_at":  gorm.Expr("updated_at"),
 			}).Error
 	})
 }
@@ -276,6 +283,7 @@ func (r *PostRepository) Unlike(postID, userID string) error {
 				UpdateColumns(map[string]any{
 					"likes_count": gorm.Expr("likes_count - 1"),
 					"hot_score":   gorm.Expr("(likes_count - 1) * 2 + comments_count * 3 + views_count * 0.1"),
+					"updated_at":  gorm.Expr("updated_at"),
 				}).Error
 		}
 		return nil
@@ -338,9 +346,12 @@ func (r *PostRepository) Favorite(postID, userID string) error {
 			return err
 		}
 
-		// 增加帖子收藏数
+		// 增加帖子收藏数（显式固定 updated_at，避免 MySQL ON UPDATE 误刷新）
 		return tx.Model(&model.Post{}).Where("id = ?", postID).
-			UpdateColumn("favorites_count", gorm.Expr("favorites_count + 1")).Error
+			UpdateColumns(map[string]any{
+				"favorites_count": gorm.Expr("favorites_count + 1"),
+				"updated_at":    gorm.Expr("updated_at"),
+			}).Error
 	})
 }
 
@@ -354,7 +365,10 @@ func (r *PostRepository) Unfavorite(postID, userID string) error {
 		if result.RowsAffected > 0 {
 			// 减少帖子收藏数
 			return tx.Model(&model.Post{}).Where("id = ?", postID).
-				UpdateColumn("favorites_count", gorm.Expr("favorites_count - 1")).Error
+				UpdateColumns(map[string]any{
+					"favorites_count": gorm.Expr("favorites_count - 1"),
+					"updated_at":    gorm.Expr("updated_at"),
+				}).Error
 		}
 		return nil
 	})
@@ -401,6 +415,7 @@ func (r *PostRepository) IncrementViews(postID string) error {
 		UpdateColumns(map[string]interface{}{
 			"views_count": gorm.Expr("views_count + 1"),
 			"hot_score":   gorm.Expr("likes_count * 2 + comments_count * 3 + (views_count + 1) * 0.1"),
+			"updated_at":  gorm.Expr("updated_at"),
 		}).Error
 }
 
@@ -537,7 +552,7 @@ func (r *PostRepository) createWithTx(tx *gorm.DB, post *model.Post, images []st
 		}
 	}
 
-	return nil
+	return tx.Model(post).Where("id = ?", post.ID).UpdateColumn("updated_at", post.CreatedAt).Error
 }
 
 // GetByIDWithContext 根据ID获取帖子（支持事务）
@@ -552,7 +567,9 @@ func (r *PostRepository) GetByIDWithContext(ctx context.Context, id string) (*mo
 
 // UpdateWithContext 更新帖子（支持事务）
 func (r *PostRepository) UpdateWithContext(ctx context.Context, post *model.Post) error {
-	post.UpdatedAt = time.Now()
+	now := time.Now()
+	post.UpdatedAt = now
+	post.ContentEditedAt = &now
 	return r.getDB(ctx).WithContext(ctx).Save(post).Error
 }
 
@@ -706,14 +723,20 @@ func (r *PostRepository) BatchUpdateStatus(ids []string, status model.PostStatus
 func (r *PostRepository) UpdatePinStatus(postID string, isPinned bool) error {
 	// 置顶状态属于管理操作，不应影响帖子内容更新时间（updated_at）
 	return r.db.Model(&model.Post{}).Where("id = ?", postID).
-		UpdateColumn("is_pinned", isPinned).Error
+		UpdateColumns(map[string]any{
+			"is_pinned":  isPinned,
+			"updated_at": gorm.Expr("updated_at"),
+		}).Error
 }
 
 // UpdateFeatureStatus 更新帖子加精状态
 func (r *PostRepository) UpdateFeatureStatus(postID string, isFeatured bool) error {
 	// 加精状态属于管理操作，不应影响帖子内容更新时间（updated_at）
 	return r.db.Model(&model.Post{}).Where("id = ?", postID).
-		UpdateColumn("is_featured", isFeatured).Error
+		UpdateColumns(map[string]any{
+			"is_featured": isFeatured,
+			"updated_at":  gorm.Expr("updated_at"),
+		}).Error
 }
 
 // ========== Cursor Pagination Methods ==========

internal/service/admin_post_service.go

@@ -1,4 +1,4 @@
-package service
+package service
 
 import (
 	"context"
@@ -278,25 +278,26 @@ func convertPostToAdminListResponse(post *model.Post) dto.AdminPostListResponse
 	}
 
 	return dto.AdminPostListResponse{
-		ID:             post.ID,
-		UserID:         post.UserID,
-		Title:          post.Title,
-		Content:        post.Content,
-		Images:         images,
-		Status:         string(post.Status),
-		LikesCount:     post.LikesCount,
-		CommentsCount:  post.CommentsCount,
-		FavoritesCount: post.FavoritesCount,
-		ViewsCount:     post.ViewsCount,
-		IsPinned:       post.IsPinned,
-		IsFeatured:     post.IsFeatured,
-		IsLocked:       post.IsLocked,
-		RejectReason:   post.RejectReason,
-		ReviewedAt:     dto.FormatTimePointer(post.ReviewedAt),
-		ReviewedBy:     post.ReviewedBy,
-		CreatedAt:      post.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
-		UpdatedAt:      post.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
-		Author:         author,
+		ID:              post.ID,
+		UserID:          post.UserID,
+		Title:           post.Title,
+		Content:         post.Content,
+		Images:          images,
+		Status:          string(post.Status),
+		LikesCount:      post.LikesCount,
+		CommentsCount:   post.CommentsCount,
+		FavoritesCount:  post.FavoritesCount,
+		ViewsCount:      post.ViewsCount,
+		IsPinned:        post.IsPinned,
+		IsFeatured:      post.IsFeatured,
+		IsLocked:        post.IsLocked,
+		RejectReason:    post.RejectReason,
+		ReviewedAt:      dto.FormatTimePointer(post.ReviewedAt),
+		ReviewedBy:      post.ReviewedBy,
+		CreatedAt:       post.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		UpdatedAt:       post.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		ContentEditedAt: dto.FormatTimePointer(post.ContentEditedAt),
+		Author:          author,
 	}
 }
 
@@ -319,28 +320,29 @@ func convertPostToAdminDetailResponse(post *model.Post) *dto.AdminPostDetailResp
 	}
 
 	return &dto.AdminPostDetailResponse{
-		ID:             post.ID,
-		UserID:         post.UserID,
-		CommunityID:    post.CommunityID,
-		Title:          post.Title,
-		Content:        post.Content,
-		Images:         images,
-		Status:         string(post.Status),
-		LikesCount:     post.LikesCount,
-		CommentsCount:  post.CommentsCount,
-		FavoritesCount: post.FavoritesCount,
-		SharesCount:    post.SharesCount,
-		ViewsCount:     post.ViewsCount,
-		HotScore:       post.HotScore,
-		IsPinned:       post.IsPinned,
-		IsFeatured:     post.IsFeatured,
-		IsLocked:       post.IsLocked,
-		IsVote:         post.IsVote,
-		RejectReason:   post.RejectReason,
-		ReviewedAt:     dto.FormatTimePointer(post.ReviewedAt),
-		ReviewedBy:     post.ReviewedBy,
-		CreatedAt:      post.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
-		UpdatedAt:      post.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
-		Author:         author,
+		ID:              post.ID,
+		UserID:          post.UserID,
+		CommunityID:     post.CommunityID,
+		Title:           post.Title,
+		Content:         post.Content,
+		Images:          images,
+		Status:          string(post.Status),
+		LikesCount:      post.LikesCount,
+		CommentsCount:   post.CommentsCount,
+		FavoritesCount:  post.FavoritesCount,
+		SharesCount:     post.SharesCount,
+		ViewsCount:      post.ViewsCount,
+		HotScore:        post.HotScore,
+		IsPinned:        post.IsPinned,
+		IsFeatured:      post.IsFeatured,
+		IsLocked:        post.IsLocked,
+		IsVote:          post.IsVote,
+		RejectReason:    post.RejectReason,
+		ReviewedAt:      dto.FormatTimePointer(post.ReviewedAt),
+		ReviewedBy:      post.ReviewedBy,
+		CreatedAt:       post.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		UpdatedAt:       post.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		ContentEditedAt: dto.FormatTimePointer(post.ContentEditedAt),
+		Author:          author,
 	}
 }

internal/service/vote_service.go

@@ -283,8 +283,10 @@ func (s *VoteService) convertToPostResponse(post *model.Post, currentUserID stri
 		IsPinned:       post.IsPinned,
 		IsLocked:       post.IsLocked,
 		IsVote:         post.IsVote,
-		CreatedAt:      dto.FormatTime(post.CreatedAt),
-		Images:         make([]dto.PostImageResponse, 0, len(post.Images)),
+		CreatedAt:       dto.FormatTime(post.CreatedAt),
+		UpdatedAt:       dto.FormatTime(post.UpdatedAt),
+		ContentEditedAt: dto.FormatTimePointer(post.ContentEditedAt),
+		Images:          make([]dto.PostImageResponse, 0, len(post.Images)),
 	}
 
 	// 转换图片